AP2 — Sorghum bicolor

Summary

SORBI_3010G140200, designated SbAP2, encodes a protein belonging to the AP2/ERF domain-containing family, specifically the ERF subfamily, which is characterized by a DNA-binding domain. In sorghum, this gene is associated with regeneration, cell wall modification, cold acclimation, lipid metabolism, and signal transduction. It is linked to grain number, grain yield, seed weight, panicle weight, tiller number, plant height, stem thickness, biomass yield, anthesis time, and salinity tolerance. Studies of related genes in other species connect the AP2/ERF family to additional traits like spikelet fertility, grain dimensions, leaf angle, and root volume, though these associations are not yet established for SbAP2 itself.